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Finding the Fourth Proportional to 445.53, 668.03 and 291.27

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Solution

The fourth proportional to 445.53, 668.03 and 291.27 is: 436.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.53 : 668.03 = 291.27 : x
  2. Step 2: Convert to fraction form
    445.53/668.03 = 291.27/x
  3. Step 3: Cross multiply
    445.53x = 668.03 × 291.27
  4. Step 4: Simplify right side
    445.53x = 194,575.64
  5. Step 5: Solve for x
    x = 194,575.64/445.53
  6. Step 6: Final answer
    x = 436.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.